Based on the following material, write a short video script for a doctor's health popularization. The script should be no longer than 2 minutes, with a total word count between 380 and 440 characters. The style should match the daily tone of a doctor, without any trace of AI writing. The first sentence must have a 'hook' — create anxiety, provide value, indicate risks, or suggest consequences — to increase user retention and completion rate on short video platforms such as Douyin and Xiaohongshu.
